diff --git a/README.md b/README.md
index cf25eb9..c2ee983 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # OAuth2 Server Example
 
+[![Greenkeeper badge](https://badges.greenkeeper.io/flowhub/flowhub-oauth2-provider-example.svg)](https://greenkeeper.io/)
+
 This is a small example that uses
 [node-oauth2-server](https://github.com/thomseddon/node-oauth2-server/) and Mongoose.
 
diff --git a/package.json b/package.json
index 0c73303..503f3a1 100644
--- a/package.json
+++ b/package.json
@@ -7,16 +7,16 @@
     "test": "NODE_ENV=test ./node_modules/.bin/mocha -R spec test/init.js test/**/*_test.js"
   },
   "dependencies": {
-    "express": "^3.4.8",
+    "express": "^4.15.2",
     "jade": "*",
     "node-oauth2-server": "^2.0.2",
-    "mongoose": "^3.8.8",
-    "bcrypt": "^0.7.7"
+    "mongoose": "^4.9.7",
+    "bcrypt": "^1.0.2"
   },
   "devDependencies": {
-    "supertest": "^0.9.0",
-    "mocha": "^1.17.1",
+    "supertest": "^3.0.0",
+    "mocha": "^3.3.0",
     "nodemon": "^1.0.15",
-    "should": "^3.3.0"
+    "should": "^11.2.1"
   }
 }